Quantum-Si Ownership | Who Owns Quantum-Si?

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Quantum-Si Ownership Summary

Quantum-Si is owned by 36.51% institutional investors, 19.85% insiders, and 43.64% retail investors. Ark investment management is the largest institutional shareholder, holding 8.75% of QSI shares. ARK Genomic Revolution is the top mutual fund, with 8.27% of its assets in Quantum-Si shares.

QSI Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Quantum-Si	36.51%	19.85%	43.64%
Sector	Healthcare Stocks	88.01%	8.90%	3.09%
Industry	Biotech Stocks	109.70%	8.77%	-18.47%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Ark investment management	12.41M	8.75%	$13.03M
Nikko asset management americas	7.86M	5.55%	$8.10M
Blackrock	7.00M	4.94%	$7.35M
Sumitomo mitsui trust	5.97M	4.19%	$16.11B
Vanguard group	4.95M	3.49%	$5.20M
State street	2.37M	1.67%	$2.49M
Geode capital management	2.17M	1.53%	$2.28M
Jacobs levy equity management	942.76K	0.67%	$989.90K
Northern trust	782.19K	0.55%	$821.30K
Fosun	743.93K	0.52%	$781.13K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Green alpha advisors	158.86K	0.34%	$428.92K
Fosun	743.93K	0.26%	$781.13K
Ark investment management	12.41M	0.12%	$13.03M
Nikko asset management americas	7.86M	0.09%	$8.10M
Knollwood investment advisory	300.00K	0.04%	$315.00K
General american investors	294.35K	0.02%	$309.07K
Dlk investment management	19.00K	0.02%	$51.30K
Shay capital	138.26K	0.02%	$145.17K
Flagship private wealth	14.16K	0.02%	$38.23K
Abel hall	10.43K	0.02%	$28.17K

Top Buyers

Holder	Shares	% Assets	Change
Jacobs levy equity management	942.76K	0.00%	436.06K
Nuveen asset management	565.08K	0.00%	244.38K
State street	2.37M	0.00%	211.54K
Millennium management	374.73K	0.00%	184.94K
Gsa capital partners llp	182.28K	0.01%	182.28K

Top Sellers

Holder	Shares	% Assets	Change
Sumitomo mitsui trust	5.97M	0.01%	-1.58M
Ark investment management	12.41M	0.12%	-358.95K
Vanguard group	4.95M	0.00%	-352.32K
Blackrock	7.00M	0.00%	-231.11K
Nikko asset management americas	7.86M	0.09%	-191.34K

New Positions

Holder	Shares	% Assets	Change	Value
Gsa capital partners llp	182.28K	0.01%	182.28K	$191.00K
Verition fund management	121.80K	0.00%	121.80K	$127.89K
Corebridge financial	53.88K	0.00%	53.88K	$56.57K
Mirae asset global etfs	52.06K	0.00%	52.06K	$54.67K
D. e. shaw	26.50K	-	26.50K	$27.82K

Sold Out

Holder	Change
Rothschild investment	-75.00
Founders capital management	-100.00
Allspring global investments	-292.00
Comerica bank	-513.00
Fortitude family office	-1.46K

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2024	110	8.91%	51,983,353	-2.83%	36	2.56%	43	-2.27%	32	6.67%
Jun 30, 2024	101	3.06%	53,496,649	1.12%	37	2.70%	44	29.41%	30	-16.67%
Mar 31, 2024	98	5.38%	52,901,605	-6.36%	37	2.35%	34	-	36	33.33%
Dec 31, 2023	93	-6.06%	56,492,161	3.69%	39	2.69%	34	-33.33%	27	58.82%
Sep 30, 2023	99	8.79%	54,483,868	24.35%	38	3.95%	51	15.91%	17	-5.56%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
ARK Genomic Revolution	11.77M	8.27%	-508.76K
ARK Genomic Revolution ETF	8.77M	6.15%	-360.45K
Nikko AM ARK Pstv Chg Innovt P JPY Acc	4.75M	3.33%	-375.91K
Vanguard Total Stock Mkt Idx Inv	3.02M	2.11%	-
iShares Russell 2000 ETF	2.76M	1.94%	-10.63K
Nikko Gbl All Biological Genome Eq MF	2.02M	1.42%	-343.46K
Vanguard Institutional Extnd Mkt Idx Tr	1.73M	1.21%	456.29K
Fidelity Small Cap Index	1.03M	0.72%	-735.00
iShares Russell 2000 Value ETF	933.54K	0.65%	-26.12K
State St Russell Sm/Mid Cp® Indx NL Cl C	710.86K	0.50%	-10.40K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Dec 27, 2024	ROTHBERG JONATHAN M		Sell	$2.76M
Dec 27, 2024	ROTHBERG JONATHAN M		Sell	$173.31K
Dec 23, 2024	Vieceli John S.	Chief Product Officer	Sell	$5.57K
Sep 23, 2024	Vieceli John S.	Chief Product Officer	Sell	$2.07K
Sep 24, 2024	Vieceli John S.	Chief Product Officer	Sell	$1.97K

Insider Transactions Trends

Date	Buy	Sell
2024 Q3	5	2
2024 Q2	-	2
2024 Q1	3	-
2023 Q3	-	-
2023 Q2	-	-

QSI Ownership FAQ

Who Owns Quantum-Si?

Quantum-Si shareholders are primarily institutional investors at 36.51%, followed by 19.85% insiders and 43.64% retail investors. The average institutional ownership in Quantum-Si's industry, Biotech Stocks , is 109.70%, which Quantum-Si falls below.

Who owns the most shares of Quantum-Si?

Quantum-Si’s largest shareholders are Ark investment management (12.41M shares, 8.75%), Nikko asset management americas (7.86M shares, 5.55%), and Blackrock (7M shares, 4.94%). Together, they hold 19.24% of Quantum-Si’s total shares outstanding.

Does Blackrock own Quantum-Si?

Yes, BlackRock owns 4.94% of Quantum-Si, totaling 7M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 7.35M$. In the last quarter, BlackRock decreased its holdings by -231K shares, a -3.20% change.

Who is Quantum-Si’s biggest shareholder by percentage of total assets invested?

Green alpha advisors is Quantum-Si’s biggest shareholder by percentage of total assets invested, with 0.34% of its assets in 158.86K Quantum-Si shares, valued at 428.92K$.

Who is the top mutual fund holder of Quantum-Si shares?

ARK Genomic Revolution is the top mutual fund holder of Quantum-Si shares, with 8.27% of its total shares outstanding invested in 11.77M Quantum-Si shares.

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